Abstract: The invention relates to a spring ring 14 for snap fitting a rotating bezel, the spring ring extending in a plane and being intended to be received in an annular groove arranged on a cylindrical outer rim of a watch case middle part made of ceramic. According to the invention, the spring ring comprises on the inner rim thereof at least one lug inclined in relation to the plane of the spring ring, said lug being intended to engage with a cylindrical outer surface of the watch case middle part, so as to index the position of the spring ring in relation to the middle part.

Abstract: A rotating-bezel system intended to be mounted for rotation on a watch-case middle inside which a horological movement is housed, including a ceramic rotating bezel, an annular ring intended to cooperate with an element angularly secured to the middle, and an annular joint for connection between the rotating bezel and the annular ring, the annular ring being placed in the rotating bezel. According to the invention, the system further includes at least one element for locking the annular ring on the rotating bezel, and at least one element being configured to lock any relative rotation between the annular ring and the bezel and to thus angularly secure the assembly formed by the ring and the bezel.

Abstract: A rotating-bezel system intended to be mounted for rotation on a watch-case middle inside which a horological movement is housed, including a ceramic rotating bezel, an annular ring intended to cooperate with an element angularly secured to the middle, and an annular joint for connection between the rotating bezel and the annular ring, the annular ring being placed in the rotating bezel. According to the invention, the system further includes at least one element for locking the annular ring on the rotating bezel, and at least one element being configured to lock any relative rotation between the annular ring and the bezel and to thus angularly secure the assembly formed by the ring and the bezel.

Abstract: The invention relates to a spring ring 14 for snap fitting a rotating bezel, the spring ring extending in a plane and being intended to be received in an annular groove arranged on a cylindrical outer rim of a watch case middle part made of ceramic. According to the invention, the spring ring comprises on the inner rim thereof at least one lug inclined in relation to the plane of the spring ring, said lug being intended to engage with a cylindrical outer surface of the watch case middle part, so as to index the position of the spring ring in relation to the middle part.

Abstract: The invention concerns a method for detecting the PVY virus which consists in a SNP test or an extension reaction specific to mutations corresponding to R/K400 et D/E419, the presence of at least one of said mutations inducting the presence of at least one virulent PVY strain capable of causing necrosis in plants of the Solanaceae family, in particular in potatoes.

Abstract: The invention concerns a method for detecting the PVY virus which consists in a SNP test or an extension reaction specific to mutations corresponding to R/K400 et D/E419, the presence of at least one of said mutations indicating the presence of at least one virulent PVY strain capable of causing necrosis in plants of the Solanaceae family, in particular in potatoes.